LEONA™ PN series (high heat resistance) | Polyamide Resin/Nylon Resin LEONA™ | High Performance Grade | Asahi Kasei Engineering Plastics

Excellent heat resistance, strength and stiffness
Polyamide Resin

Leona Leona

What is the LEONA™ PN series?

LEONA™ P Series is a high-heat-resistant grade based on high-performance polyamide (PPA). Among PPA materials, it offers one of the highest levels of heat resistance and exhibits excellent mechanical properties under high-temperature conditions.
This series enables use in high-temperature environments and compatibility with reflow soldering processes, which could not be achieved with conventional Leona grades.

Currently, three grade families are under development:

  • Glass fiber–reinforced, flame-retardant: PN Series (commercially available)
  • Glass fiber–reinforced, non-flame-retardant: PG Series (under development)
  • Carbon fiber–reinforced: PC Series (under development)

The glass fiber–reinforced, flame-retardant PN Series has now been commercially launched.
This page introduces the key features of the PN Series.

Leona PN series Application cases

What Is LEONA™PN Series

LEONA™ PN Series uses a halogen-free flame retardant and has achieved UL 94 V-0 flammability rating at 0.30 mm thickness.
It also offers a CTI of 600 V (PLC 0), contributing to enhanced safety and miniaturization of high-voltage components.
With a melting point exceeding 320°C, the PN Series is suitable for use in reflow soldering processes.
High-heat-resistant PPA materials are increasingly used in electrical and electronic components as well as automotive parts. This trend is driven by rising operating temperatures resulting from higher integration density aimed at component miniaturization.

LEONA™ PN Series Features

Heat resistance

LEONA™ PN Series offers one of the highest glass transition temperatures among PPA materials.
As a result, it maintains high rigidity even in high-temperature regions around 150°C.

Temperature Dependence of Tensile Modulus
Temperature Dependence of Tensile Modulus

High-Temperature Aging

LEONA™ PN Series also exhibits excellent resistance to high-temperature aging.
The tensile strength retention after 3,000 hours of aging at 150°C was 94%.

Results of 150℃ aging tests
Results of 150℃ aging tests

Toughness

LEONA™ PN Series is halogen-free and achieves a V-0 flame retardancy rating, while also offering excellent toughness.
This contributes to improved product durability and helps prevent cracking failures during assembly.

Stress–Strain Curve
Stress–Strain Curve

Electrical properties (high CTI)

LEONA™ PN Series offers excellent electrical properties, with a CTI of 600 V, the highest level available.
This contributes to enhanced safety of high-voltage components and enables miniaturization through reduced creepage distance.

Trackig resistance comparison
Trackig resistance comparison

LEONA™ PN series Application Cases

Connector

×

Components and devices used to connect cables to each other and to connect power and electrical signals.
Flame resistance, tracking resistance, strength, toughness, etc. are required.

https://www.asahi-kasei-plastics.com/wp-content/uploads/2021/03/connector.jpg

Related articles

Products

SN11B,SN103 (SN series)

FR200,FR650 (FR series)

FG170,FG172,FG171,FG173 (FG series)

Features

  • Flame resistancy (V-0)
  • Electrical properties (CTI PLC0)(SN11B, SN103)
  • High strength and toughness
  • Good moldability
  • Glow wire resistance (FR650、SN11B)

Three phase connectors

×

Three phase connector to be mounted inside the drive motor.
Ion migration resistance, flame retardance, and tracking resistance are required because of the high power flow, safety, and miniaturization requirements.

https://www.asahi-kasei-plastics.com/wp-content/uploads/2023/11/three-phase-connector.jpg

Related articles

Products

SN11B

Features

  • Ion migration resistance
  • Flame retardancy  (UL94 V-0)
  • Tracking resistance (CTI 0)
  • Toughness at low temperatures, Impact resistance

High-voltage connectors

×

High-voltage connectors used around the batteries of electric vehicles.
Orange color is required to alert the user to the high voltage. Flame retardancy and tracking resistance are required.

https://www.asahi-kasei-plastics.com/wp-content/uploads/2021/03/highvolt.png

Products

SN11B

Features

  • Excellent surface appearance
  • Flame resistance
  • Tracking resistance (CTI 0)
  • Toughness at low temperatures, Impact resistance

LEONA™ PN Series  Related Contents

Product Data/Tips for Use *Handling Precautions

LEONA™ handling precautions

The content of this document is based on materials, information, and data available at this time, and may be revised based on new findings. Please note that these are provided as information and are not guaranteed. Therefore, when using our products, please take full consideration of the usage environment, design, etc., and use them at your own risk after judging that there is no problem with the product.

1. Handling Precautions

The following are important points to note when handling LEONA™ that we supply to you. Please use them to ensure safe handling of LEONA™.
Please note that we have prepared a separate Material Safety Data Sheet for handling precautions for LEONA™. Please contact our staff and we will send it to you. Please investigate the safety of any additives other than LEONA™ that you use yourself.

(1) Safety and health precautions
Be careful to avoid eye or skin contact or inhalation of gases generated during drying or melting of LEONA™. Also, avoid direct contact with hot resin. We recommend installing local exhaust ventilation and wearing protective equipment (safety glasses, gloves, etc.) during each operation such as drying and melting.

(2) Precautions regarding combustion
LEONA™ is flammable, so handle and store it away from heat and sources of ignition. If it catches fire, it may emit toxic or suffocating gases. To extinguish a fire, use water, foam or dry chemical extinguishers.

(3) Disposal precautions
LEONA™ can be disposed of by incineration or landfill, but disposal should be entrusted to a certified industrial waste disposal company or local government in accordance with the Waste Disposal and Public Cleansing Law. If you incinerate Leona™ yourself, use incineration equipment that complies with the Air Pollution Control Law and other laws and regulations. Incineration may generate toxic gases such as carbon monoxide and suffocating gases.

(4) Notes on storage
Absolutely avoid resin contamination and moisture absorption. Store in a cool, dry place and start molding immediately after opening. Do not pierce the product bag or let it get wet. Also, do not return spilled resin to the product bag. It is a combustible material (synthetic resins) designated by the Fire Service Act, and should be handled in accordance with municipal ordinances. (Fire extinguishing facility, indoor storage facility, etc.)

(5) Precautions for molding
The appropriate resin temperature for molding LEONA™ is 270-310°C. If the temperature is lower than this, there is a risk of localized deterioration of physical properties due to uneven plasticization. On the other hand, if the temperature is higher than this, there is a risk of gas generation due to decomposition and poor appearance such as silver. However, there are some exceptions such as FR200 and FR370, so be sure to refer to the individual catalogs before molding. Also, do not allow LEONA™ to remain in a molten state in the molding machine cylinder for a long period of time. This will cause the resin to decompose and the molded product to discolor or deteriorate. In that case, replace the inside of the cylinder with polyethylene or similar before molding.

2. Usage

  • -LEONA™ should not be used for implantation into the body or for applications involving direct contact with body fluids or infusions.
  • ・When using for other medical purposes, please be sure to contact us in advance.
  • ・Do not use for applications that come into contact with food, such as food packaging containers.
  • ・Please contact us for details.
  • ・If you are considering using our products for other special purposes, please contact us and we will discuss them individually.
  • ・Please contact our person in charge for details on the compatibility of each grade with the Electrical Appliance and Material Control Law, UL standards, CSA standards, etc.

3.Others

Please be aware of industrial property rights when using this product.

Please contact us to ask any questions, discuss any concerns, and request samples.

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